Lock



Sept. 6, 1932.

LOCK

C. BEHRENDS Filed Sept. 8, 1930 3 Sheets-Sheet l hyvexytor (I.flelyrevds Sept. 6, 1932.

' C. BEHRENDS LOCK Filed Sept. 8. 1950 3 Sheets-Sheet 2 I we x7t'or P1932- c. BEHRENDS 1,875,978

LOCK

Filed Sept. 8, 1930 5 Sheets-Sheet 5 I We :rt-or I i (6. BeiyrerydsPatented Sept. 6, 1932 PATENT FOFFIVCE;

onn srmivnnnnnnns, or WINNIPEG, MANITOBA, CANADA ILocK Application filedSeptember58g1930, Serial No. 480,550, and in Canada September 9, 1929."

A further object of the invention is to provide a lock, the interiorlocking parts of which can be readily shaped-to accomodate keys ofvarying kinds and wherein the key used for any particular lock can beeasily and quickly made.

A further object ofthe invention is to provide a lock having relativelyfew interior parts and those parts designed so that they can be cheaplyand quickly construct'edand a sectional view at 44 Figure 1.

also assembled and mounted within the lock casing.

A further object is to construct alock'con struction which readily lendsitself to the 7 locks or light locks depending on the particularlocation where the lock is to be used. A further object is to constructthe look so that the locking parts canbe readily operated withoutemploying a key from the in: terior side of the lock and such that saidparts can also be retained in locked or unlocked position from theinterior side of the lock.

l Vith the above more important and other minor objects in view, theinvention consists essentially in the arrangement and construction ofparts hereinafter more particularly described, reference being had tothe accompanying drawings, in which J Fig. 1 is an exterior'view of thelock. Fig. 2 is a perspective view of the open end of the lock. Fig. 3is a perspective view of the plate. V Fig. 4 is an enlarged detailedhorizontal locking 5 is a vertical sectional view at 5-5 Figure 1 andshowingthe lock inglocked' position. i v,

Fig. 6 is a view similar to Figure 5 and showing the lock in unlockedosition;

out and in figures,

Fig. 7 is a vertical cross sectional view at 7-7 Figure 4 and showingthe parts in locked position. V

Fig. 8 is a view similar to Figure 7 and showing the parts in unlockedposition;

Fig. 9is a vertical cross sectional view at 99 Figure 6 and showing thekey inserted. Fig. 10 is "a cross sectional view at 1010 Figure 5.

Figs. 11, 12, 13 and 14 are side views of the several locking latchesemployed.

Fig. is an'interior view of a modifie type of lock in the lockedposition.

Fig; 16 is an interior view of the'latter lock in the unlocked positionwith the key inserted.

' In the drawings like characters of'reference indicate correspondingparts in the several The lock casing l is substantially rectangular andis herein shown as formed from inner and outer plates 2 and 3, theflanged top and bottom plates 4 and 5 riveted thereto and a pair ofvertically disposed lengthwise extending parallel guide plates 6 and 7flanged at their upper and lower edges and fastened per.- rnanently tothe top and bottom plates. The plates 4c, 5, 6 and 7 provide an interiorsubstantially rectangular compartment 8 which contains the lockinglatches shortly described.

' The front end of the casing is closed by a substantially rectangularblock 9' which is provided witha centrally located vertical slot 10continuous withthe adjacent end of the cavity 8 and two centrallylocated and opposing cross slots 11 and 12 communicating with thevertical slot. A channel-shaped guard plate 13 encloses the block beingfastened by side screws 14 to the casing and the guard plate is providedwith a centrally located transverse slot 15 registering with the slots 9Hand 12. .The casing is suitably fastened such as by morticing in the-swinging or free side of a door 16, theguard plate being flushwith theedge of the door.

To the door frame 17 in a location directly opposite the centre of thelock, I 'fasten permanently a locking plate '18 which is provided with apair of similar right and left somewhat wedge-shaped lugs 19 and 20having thejnar row ends turned outwardly and'the heel portions 21thereof spaced apart a distance approximately equal to the width of theslot 10. The lugs are adapted to enter or withdraw from the slots 11 and12 when the door is closed or opened and when the door is in the closedposition, the space between the butt ends 21 of the lugs is directlyopposite the forward end of the cavity 8.

Within the cavity 8, I place a plurality of similarly constructedlocking 7 latches, four of such latches indicated at 22', 28, 24 and 251 being herein used. The latches are all piv otally mounted side by sidewithin the cavity 8 on a cross pin26 carried by inner plates 6 and'7,thepin being at the endof the lock remote from the edge of the door. 7 Thelength of the latches is such that, their free ends operate in thevertical slot 10. 7

Each latch is provided adjoining the pin with a substantially squareopening 27 and towards the end remote from the pin with a severallatches as clearly shown in Figures- 11, 12, 13and 14. The righthandside of each of the openings 28 is provided with apair of 7 slots 32 butit will be observed that the slots of the pairs are not all spaced anequal distanc e apart.

v In placing the latches in the cavity 8, the latch is put in first,thenthe latches 24, 28 and 22 in the order named so that'the latch 22 isnearest the observer in the section shown in Figure 5. 'The latches wheninserted are free tomove up anddown between the plates 6 and 7 turnin onthe pin 26 and the free ends thereof having the slots 31. therein areoperating within the vertical slot 10 and here I might mentionthat theslots 31 are complementary to the slots 11 and 12. I a

In order that the inner pair of latches may have a bearing against theblock 9, I have provided them each with outturned end flanges 33 whichengage the side faces of the slot 10 when the lock is unlocked and whichalso engage the heels 21 ofthe lugs 19 and 20 when the lock is locked.It willbe observed in Figure 6 that if the latches be shifted so thatthe slots 31 are all in registration,the door can be opened as thelugs19 and'20 can at such time clear through the slots 11 and 12 and that ifthe said slots are not in registration as shown in; Figure 5, the endsof the latches' positively prevent the opening of the door as they arecaught between the heels of the lugs 19' and 20.

The in swung position of the latches is limited by a cross pin 34carried by the plates 6 and 7 and when the latches are in their lockingposition, the notches receive the latter pin in the manner best shown inFigure 5 and here it will be observed that the latter pin holds thelatches sufliciently apart to provide a key hole opening 35therebetween. The latches are normally pressed to the position shown inFigure 5 by U-shaped springs 36, two springs being utilized, one end ofeach spring being attached to one latch and the other end of the samespring being attached to the next adj acent latch. The outer plate 30fthe casing and the inner plates6 v and are provided with horizontallyaligned vertically disposed key hole slots 37 and the key passage 35 islocatedbetween the key hole slots of the inner plates;

f The key used is of the irregular shape shown in Figure 9 and it willbeobserved that it has a pointedend 39..' When the key is inserted in theslot 37 and pushed inwardly into the lock, the pointed end 39 thereof enters the passage 35 and as the key goes in,

the latches are all actuatedthereby a greater or less amount dependingon the shape of the key. In the final inserted position of the key, suchbeing limited by the stop shoulder 40 thereof, the slots31 are all inregistration as shown in Figure 6 and in such position, the door isfree, to open as the latches'can at such time clear past either of thelugs 19 or 20. When the key is subsequently withdrawn, the springsreturnthe latches to their initial position as shown; in F igure 5.Accordinglywhen the door is? closed and the key is withdrawn, thelatches become automatically locked between the heels of the lugs 19'and 20. Y

By varying the positions of the notches 31 respect to the longitudinalaxis of the latches, I vary the distances which the latches have to beshifted to come into registration and accordingly it is an easy matterto make locks whichcan be opened by various shapes of keys. The insertedkey, however,

must bring all thenotches 31 into registrta tion to permit the door toopen In order that the latches may be moved to unlocked'position fromthe interior side of the lock, Ihaveprovided a pair of finger grips 41and 42 at the inner sideof the lock, these being formed at the outerends of a pair of jaws 43 and 44 pivotally carried by pins 45 supportedby a substantially square bearing frame46 secured to the plate 2. The

jaws are tapered as best shown in Figures 7;

and 8 and pass through the openings 27 of the latches and hayetheirinner ends entered in an opening 47 provided in'the plate 6.

The arrangement of the jaws and theopenings 27 is such that whenthe jawsare in the closed position as shown in Figure 7 the slots 31 of thelatches are in their locked position and that when the jaws are fullyopened as shown in Figure 8, the slots 31 are in registration. Theopening position of the jaws is limited by the opening 47.

In order that one may fasten the latches either in their locked orunlocked positions and from the interior of the lock, I have provided alocking lever 48 pivotally carried by the inner plate 2 and provided atits inner end with a blade 49 which is adapted to enter selected slots32 of the latches when the latter are in their locked or unlockedpositions. In this connection, I may point out that the slots 32 arearranged so that when the latches are in their locked position, certainof the slots will be aligned to receive the blade and that when thelatches are in their unlocked position, certain other of said slots willbe in alignment to receive the blade.

As before stated, the latches are normally pressed to locked position bythe springs and are spread to open or unlocked position by either themanipulation of the jaws or the insertion of the key. Accordingly whenthe door is open, the latches are in their locked position unlessfastened in their unlocked position by the lever 48. When the door isclosed and assuming the blade 49 is not in the notches 32, the pointedend of the lug 19 or the lug 20, depending on which direction the doorswings, is adapted to pass through the slot 11 or the slot 12 and enterthe entrance reserved at 50 Figure 5 to receive it and as the doorcloses, the lug forces the latches apart against the action of thesprings,

latches so escaping over the lug and finally taking their lockedposition between the butt ends of the lugs.

The door will accordingly be locked closed automatically and can only beopened from the exterior by the key and from the interior by thepressing together of the finger grips ll and i2.

From the above it will be apparent that the lock can be manufactured atrelatively small cost and the parts easily and quickly assemhled andthat the latch structure can be readily modified to be actuated byvarious shapes of keys and that only one key will fit any particularlock as any variation in the shape of the key will not pass the slots 31into registration and position them in respect to the hutt ends of thelugs 19 and 20 such that the door can be opened.

in Figures 15 and 16, I have shown a simple type of lock operated by theinsertion of a key, the shape of the key being such that the in movementthereof actuates the locking latches. In the type of lock previouslydescribed, the locking latches are pivoted on the pivot pin but in thistype of lock, the locking latches 51 are slidably mounted side by side'3 between the front end 52 of the lock casing and an interior guideplate/53. The, casing is provided with an entrance slot 54 for a hasp inthe form of an eye (not shown) and eachof the locking plates is providedwith a vertical slot 55 and a horizontal slot 56 opening to the same andthezslots provide catches 57 which when thelocking latches are in theirunlocked position as shown in Figure 16,.per1nit of the insertion oftheeye through the slot 54: and when the latches arein their lockedposition'as'shownl in Figure 15, engage the eye, the catches 57 enteringthe same. 7

The several latches are provided with strikers 58 which are adapted tobe spread apart by the insertion of the key 59, the key as it moves in,endwise shifting all the latches and bringing the same to the positionshown in Figure 16 which is the unlocked position of the catches 57.Springs 60 are mounted L within the casing and engage theopposite endsof the latches and hold them normally in their locked positions as shownin Figure 15. r

I have not given a very detailed description of the modified type oflatch shown in Figures 15 and 16 as the structure therein disclosed isonly to show'that instead of constructing the lock with the latchespivoted, it is possible to construct it with the latches so that theyend shift, being end shifted by the in pushing of the key and beingbrought to their unlocked position by the key, the peculiar shapeofwhich controls the shifted position of the several latches.

What I claim as my invention is V l. A key operated lock comprising acasing, a plurality of similar latches arranged side by side within thecasing, said latches being exposed at one end beyond thecasing and beingprovided at such ends with differently positioned slots, a pivot pinpivotally supporting the other ends of the latches, springs engaging thelatches and normally pressing the same inwardly to place the slots outof registration, a stop pin carried by the casing and passing throughsuitable slots provided in the bodies of the latches and limunder theinfluence of the springs, and a locking lever carried by the casing andengageable with the latches to lock the same with the end slots out ofor in registration as desired. 7

2. A key operated lock comprising a casing, a plurality of similarvlocking latches positioned side by side within the. casing, said latchesbeing exposed at one end beyond the casing and being provided at thatend with differently positioned slots, a pivot pin pivotally supportingthe other ends of the latches, spring means engaging the latches andnormally holding the same against spreading, a stop pin passing throughthe latches and limiting their closed position under the action of thesprings finger actuated means operable from the interior side of thecasing for spreading the latches to bring the end slots thereof intoregistration and finger actuated means operable from the interior sideof the casing for locking the latches in or out of registration asdesired. Signed at Winnipegthis 14th day of August, 1930. V I CHRISTIANBEHRENDS.

